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<?php $search_array = array("https", "www", "stackoverflow", "com"); foreach($search_array as $i => $domain) { if ( $search_array[$i] == null || $domain == "http" && count($search_array) > 1 || $domain == "https" && count($search_array) > 1 || $domain == "www" && count($search_array) > 1 || $domain == "com" && count($search_array) > 1 ) unset($search_array[$i]); } die(print_r($search_array));

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